Adjusting device for cone ball-bearings.



PATENTED JAN. '1, 1907.

F. T. FARMER. ADJUSTING DEVICE FOR GONE BALL BEARINGS.

APPLICATION FILED MAR.9,1906.

n j m THE mmms PETERS C0, wasumarmv. 04 c.

To all whom may concern: I

OFFICE. FRANK 'r. FARMER. or CHICAGO, ILLI OIS, ASSIGNOR TOTHE WHITMAN & BARNES MANUFACTURING 00., or AKRON, e10, AcoRPoRAno or OHIO.

ADJUSTING DEVICE FOBYCONE BALL-BEARINGS.

Be it known that I, FRANK T. 'FARMER, a

citizen of the United Statesfiesidin in the city of Chicago, county of Cook, and tate of Illinois, have invented a certain new and useful Improvement in Adjusting Devices for Cone Ball-Bearings, of which the followi cone surfaces and'the balls of cone ba1l-bearis a specification.

y invention relates to means for adjustingand tightening the contactbetween the ings to'prevent injury occasioned by loose furs contact, and thereby prolong the life of the a simple, economical, and efficient device of this character readily operated by unskilled Qpersons and having ,considerable throw, so

to. take up lost motion or relieve tensionthat 1 the parts, may be repeatedlyv adjusted When.j'arnmed or crowded.

Q While my device is adapted for use on any 4 cone ballbearing, it is particularly useful 25 where an easyjand accurate shear is required a {between therevolving cutter-blades and the ,stationary cutter -bar/ In such a machine j the loosening of the reel-bearings is especially on the ball-bearings of lawn'mower reels,

objectionable. j j

To illustratemyinvention I have there.- fore shownin the accompanying drawings the parts ofa lawn-mower adjacent to the ball-bearings fittedwith a device embodying my invention. Where desired, two of my devices maybe applied to the ends of the reel, though in the drawings I have shown but one.

i 1 Figure 1 is 'a brok en horizontal sectional to the ball-bearings of the reel, showingmy 1 device in position between the hub ofthe plan view of parts of a lawn-mower adjacent spider and the flange of the cone. Fig. 2 is a thereonyand Figs. 3 and 4 are developed views of one of the annular cone-bearings and broken detail sectional elevation of the reelshaft and'the annular cone-bearing mounted of one of theadjusting-colleirS, respectively.

The lawn-mower. shown comprises the usual frame A; traction-wheel b on main driving-shaft 0;. reel-shaft 5, operatively con .nected to the traction-wheel by. pinions 8 within the housing 18 of the traction-wheel Specification of Letters Patent. A licafiqn filed March 9, 1906. Serial No. 306,069,

Patented J an. 1, 1907.

and adapted to engage the usualinternal gear g, and thus transmit power to the reelshaft; spiders 6, carrying cutter-blades 7; cross-bard, attached to the frame at the ends and supporting stationary cutter-bar 6, roll f secured at the encls to the side frame and supporting the machine when in use.

5 ndicates any shaft supported in ballbearings within the main bearing 8. The ball-bearings comprise i the usual cap 9, Which-protects the retaining-ring 10, spacing i and confining the balls 11.

f 12 indicates a cone-bearing mounted on shaft 5,- provided on its inner face with a longitudinal groove 13, engaging a pin 14 upon the shaft 5 so as to turn with the shaft, but having capacity for longitudinal movementthereon in the direction of the balls. The cone is also provided on the side opposite to the bearings with aspiral cam-face 12 The parts on the left-hand side of the flange 17 of the annular cone-bearing are those usually found in such devices. The rear or inner surface of the cone 12 is provided 'witha cam-face 12, the annular adjusting-collar 15 impinging against the supporting block or hub 6, which holds it in contact with the cone, and havingon'the face adjacent to the cone a cam-surface 15 The adjusting-collar 15 is provided with a set screw 16, adapted to secure the collar at the desired points on the shaft.

spider affords the necessary support for the adjusting-collar, though it will be readily seen that any block or rigid support may be used to accomplish this purpose.

The cam-faces of the spirals 15 and 12 are first intermeshed and the position of the in l i'through the shaft 5 is determined, t 's pin and hole 13 being so placed that the ball- As shown in the drawings, the hub of the bearingcone is held against the balls and the adjustingcollar, which in turn is supported in close contact with'the hub or block 6.

The parts 6, 15, 12, and 11 are thus all in sucshaft, so that the spirals 15 and 12" impinge 1o 5 i and press the cone 12 against the balls 11.;

cessive contact, the adjusting-collar being setoo 6 The operation of my deviceis as follows:

This operation may be repeated from time to time untilthe cone is pushed along the shaft a distance equal to the step of the spiral. In practice this will be found sufficient, since are needed the-balls will be Worn out.

Having thus described my invention, what- I claim is 1. A ball-bearing comprising a bearing-cup having a ring and balls therein, a cone, adapt- -ed to fit within said cup and rest upon said balls, mounted to rotate with a shaft but free to move longitudinally thereon, hav: ing on the face opposite to said cup a cam surface, a hub or block rigidly secured to said shaft, an adjusting-collar, adapted to be secured to said shaft by a set-screw, intermediate of and contacting with said block and cone and having on the side adjacent to the latter a cam-surface oppositely pitched to the cam-surface on said cone, whereby said collar may be turned to adjust said cone relative to said balls.

2. The combination of a rotating shaft having a cone secured thereon, one of said members being provided with a groove and the other with a pin adapted to engage therewith to permit independent longitudinal movement of the cone on said shaft while securing it to rotate therewith, an adjusting- 1 dollar adapted to be secured at any point about the circumference of said shaft by a set-screw, said cone and collar having oppositely-pitched cam-faces, and a block secured to said shaft adapted tohold said camfaces in contact whereby said cone is moved longitudinally on said shaft by turning said' by the time-such considerable adjustments I collar.

8. The combination of a rotating shaft, a

bearing-cup containing balls, a conefitted' within said balls secured on said shaft to rotate therewith but free to move lon itudinally thereon, a collar contacting wit said cone secured to said shaft by a set-screw, and a block on said shaft adapted to maintain said contact, the adjacent faces of said cone and collar having oppositely-pitched cam-surfaces whereby said cone may be adjusted by setting said collar at different points around said shaft.

4. The combination of a rotating shaft, a cone secured to-rotate therewith but free to move longitudinally thereof, balls, a bearing-cup adapted to hold the said balls in contact with the inclinedsides of said cone, a

contact, the adjacent faces of said collar and cone having oppositely-pitched cam surfaces.

I FRANK T. FARMER.

Witnesses:

W. E. RoWnLL, WATTS HOLENWOOD. 

